1 Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, 0027 Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway.
2 Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, 0027 Oslo, Norway.
3 Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, 0027 Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway; Thrombosis Research Center (TREC), Division of internal medicine, University hospital of North Norway, Tromsø Norway.
4 Department of Internal Medicine, Bærum Hospital, Vestre Viken Hospital Trust, 1346 Gjettum, Norway; Division of Laboratory Medicine, Department of Immunology, Oslo University Hospital, 0424 Oslo, Norway.
5 Department of Hematology, Oslo University Hospital, Oslo, Norway; Hospital Pharmacies, South-Eastern Norway Enterprise, Oslo, Norway.
6 Department of Anaesthesia and Intensive Care Medicine, Oslo University Hospital, Oslo, Norway.
7 Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway; Department of Infectious Diseases, Oslo University Hospital, Ullevål, Oslo, Norway.
8 Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, 0027 Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway; Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital, Oslo, Norway.
9 Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, 0027 Oslo, Norway; Department of Acute Medicine, Oslo University Hospital, Oslo, Norway.
10 Research Institute for Internal Medicine, Oslo University Hospital Rikshospitalet, 0027 Oslo, Norway. Electronic address: ida.gregersen@medisin.uio.no.